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Post by robert on Oct 16, 2019 23:12:46 GMT
Better to use one place for all questions, images and progress than starting several threads Im going to put 130cc direct parma on this one and it is my first full circle. Flywheel side: 83.5mm Clutch side: 88mm (87.62 between inlet pad) As I understand it all full circle cranks need to have the block(s) milled to 88mm for the larger webs. Do I need to do both or only flyside? Also how much do I need to take of the cylinder seat? Edge measuring 0.62mm
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Post by robert on Oct 24, 2019 0:06:55 GMT
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Post by robert on Oct 30, 2019 22:07:08 GMT
Had some struggle getting the front schock absorber removed from the fork. Had to grind it off. could not get the needle besrings out from the fork so need to heat that again for another try...
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Post by tzsteve on Nov 6, 2019 16:58:43 GMT
fork needle bearings:
1st remove the grease nipple then drift them both out with a socket working from one side only they are not normally a tight fit
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Post by robert on Nov 6, 2019 22:57:58 GMT
fork needle bearings: 1st remove the grease nipple then drift them both out with a socket working from one side only they are not normally a tight fit Thanks! I will try a socket.
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Post by robert on Nov 6, 2019 22:59:31 GMT
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Post by tzsteve on Nov 7, 2019 16:55:21 GMT
a few people would take the opportunity to reinforce the central channel while it was in this state. that can help stop the frame flexing if you ever get it doing more than 75
a flex frame can feel a little odd, you go into a corner the front end dips in and you feel the back end trying to carry on in a different direction
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Post by robert on Nov 8, 2019 8:20:24 GMT
a few people would take the opportunity to reinforce the central channel while it was in this state. that can help stop the frame flexing if you ever get it doing more than 75 a flex frame can feel a little odd, you go into a corner the front end dips in and you feel the back end trying to carry on in a different direction Thats a good idea! Reinforce it similiar to how its factory done already? Also any suggestions on how to fix the dents?
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Post by tzsteve on Nov 9, 2019 20:31:21 GMT
blow lamp till red and a few gentle taps with a hammer or lever from the inside while hot
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Post by robert on Nov 9, 2019 21:17:29 GMT
blow lamp till red and a few gentle taps with a hammer or lever from the inside while hot I have a wall in the way so hard to get at it from the inside
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Post by triffid on Nov 13, 2019 21:35:04 GMT
May just be the camera angle but that frame looks somewhat bent, which would help explain some of the creases in the legshields. Might be worth getting what you have along to a frame jigger to be sure and if/once straight then weld a wee bar between rear frame at seat hinge area and headset to stop it flexing when you weld the new floor (and maybe front panel if frame is too squint).
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Post by tzsteve on Nov 13, 2019 21:52:04 GMT
robertyou will get there in the end
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Post by robert on Nov 13, 2019 22:44:19 GMT
I also think it is slightly bent. I bought a cross laser and will check and try to get it true if needed. Today I spent some time training with the mig welder on 0.7mm plate. Also grinded of some rust and painted with primer. Weld surfaces is masked and will be painted with weld primer.
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Post by tzsteve on Nov 14, 2019 16:28:04 GMT
if it was made by man a vespa man can fix it
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Post by robert on Nov 14, 2019 18:28:22 GMT
a few people would take the opportunity to reinforce the central channel while it was in this state. How do you reinforce it? Like this?
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Post by tzsteve on Nov 14, 2019 21:45:47 GMT
not across the frame but along it sides and top terry frankland also had his reinforced around the edge of the leg shields and around the edges of the engine bay with round steel bar welded into the lip but I saw his scoot do 87 plus through timing lights at Aintree I think he was about 16 stone at the time so the frame would need bracing just for normal road use a big man and a big loss to the racing scene
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Post by robert on Nov 20, 2019 23:48:22 GMT
not across the frame but along it sides and top terry frankland also had his reinforced around the edge of the leg shields and around the edges of the engine bay with round steel bar welded into the lipĀ but I saw his scoot do 87 plus through timing lights at Aintree I think he was about 16 stone at the time so the frame would need bracing just for normal road use a big man and a big loss to the racing scene The floor I removed had a steelbar welded in to the lip. Felt pretty strong! Today I had a real pain getting the floor to match with the frame edge. There is a small gap in the middle area but maybe filler can help after welding. I also think I need to get the frame true horizontal. Got i ok with a long bar vertical
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Post by robert on Nov 27, 2019 22:38:32 GMT
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Post by robert on Dec 4, 2019 23:58:02 GMT
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Post by tzsteve on Dec 5, 2019 20:46:27 GMT
some time and effort well invested
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